In this study, the Normalized Difference Vegetation Index (NDVI) and the band ratio of the total radiance at channels 670nm and 865nm were used to determine the sea surface albedo. The air mass character parameter and aerosol optical depth were then assessed by a simulated process. The pixel-by-pixel aerosol scattering radiance and water-leaving radiance are the main goals to retrieve in this study. As the Ocean Color Imager (OCI) is similar to the Sea-viewing Wide Field-of-view Sensor (Sea WiFS), a set of images were acquired both by Sea WiFS and OCI at the same temporal and spatial parameters. Their respective models-SeaWiFS Data Analysis System (SeaDAS) and Ocean Color Imager TRANsmittance / radiance computation code (OCITRAN) were employed to retrieve the water-leaving radiance so we could compare and evaluate the accuracy of OCITRAN. The results showed a high correlation (R>0.76) between the two models, proving that the OCITRAN algorithm established by this study is adaptable.